Last Epoch Lightless Arbor Dungeon Guide & Walkthrough

The Lightless Arbor represents one of the earliest dungeons players can explore in Last Epoch, offering formidable enemies and unique mechanics to overcome. This guide covers locating the dungeon, how to leverage its illumination mechanic, strategies for defeating the multi-phase Mountain Beneath boss fight, and the rewards for completing the harrowing gauntlet.

Last Epoch Lightless Arbor Dungeon Guide and Walkthrough
How to Find Lightless Arbor Dungeon?
Lightless Arbor Dungeon Boss Fight
- Phase 1: Toppling The Mountain
- Phase 2: Destroying the Heart
Lightless Arbor Dungeon Quest Rewards

Last Epoch Lightless Arbor Dungeon Guide and Walkthrough

Before the Lightless Arbor dungeon can be accessed in Last Epoch, players need Lightless Arbor Keys which are random drops from timeline bosses and enemies. Once a key is obtained, the dungeon can be entered on Difficulties 1-4, each featuring tougher enemies but greater rewards.

How to Find Lightless Arbor Dungeon?

The Lightless Arbor resides in the Ruined Era region, specifically the Last Refuge area. To locate it, fast-travel to The Surface waypoint, then head north into Shrouded Ridge. Continue moving north through the dying forest until arriving at the dungeon entrance.

Upon entering, a Burning Amber shard attaches to the player's character, serving as the dungeon's primary mechanic. The Amber illuminates the surroundings, allowing players to see enemies and deal extra damage within the light radius. Players can reposition the Amber shard using the "Illumination" skill.

Lightless Arbor Dungeon Boss Fight

Getting struck by enemies causes the Amber to dim, severely reducing visibility and combat effectiveness. Seek out Amber Elementals in the dark. Defeating them refills the Amber to full illumination power. Repeat this while navigating the perilous tunnels toward the boss.

Phase 1: Toppling The Mountain

The Mountain Beneath boss.png — The Mountain Beneath boss

The Mountain Beneath boss initially appears immune with Burning Pyres needing destruction.

Boss	Abilities
The Mountain Beneath	Cause rocks to fall from the sky, creating damage Summon additional enemies when rocks fall Slam the ground to deal high damage Create root walls that damage and immobilize players

Lure enemies away, then ignite the pyres with the Amber shard to damage the boss. Dodge its lethal Shockwave and Rockfall attacks until both pyres are lit, causing the mountain to collapse inward.

Phase 2: Destroying the Heart

The Stone Titan's Heart boss.png — The Stone Titan's Heart boss

Enter the mountain's core to initiate phase two against its Stone Titan Heart.

Boss	Abilities
Stone Titan's Heart	Cause rocks to fall from the sky, creating damage Summons four Titanflesh enemies Fire a beam that creates splits and damages Create a circling stone that deals damage Send out an energy wave that gives poisons and damages Cover the arena in roots, leaving only a small safe area Fire thorns that give poison Place explosives that grow in the area until they detonate

Priority is evading attacks like Spore Beam and Energy Wave while dishing out damage. In lower health, the Heart employs more desperate tactics, but with patience and observation, it can be felled.

Lightless Arbor Dungeon Quest Rewards

Upon victory, a Vaults door appears, enabling players to add difficulty modifiers for greater prizes. The rewards include:

Helmet (Peak of the Mountain): Drops from tier 1 and higher
Boots (Foot of the Mountain): Drops from tier 2 and higher
Shield (Face of the Mountain): Drops from tier 3 and higher
Body Armor (Core of the Mountain): Drops only from tier 4

The other rewards dropping after defeating the Lightless Arbor Dungeon quest are valuable crafting materials, Exalted items, and more. The trick is balancing risk versus reward through the various Vaults modifiers.

With this Lightless Arbor guide, players can brave the darkness and claim the rewards within. Adapt and overcome, reap the spoils, then continue honing your character build through the many challenges Last Epoch's world presents!